Improvement in pumps for oil-wells



I' BOWEN Pump for Oil-Wells.

. Patented Oct. 8, 1878.

ATTORNEYS.

UNITEDSTATES PATENT OFFICE.

FREDERICK BOVEN, OF BARNHARTS MILLS, PENNSYLVANIA.

IMPROVEMENT IN PUMPS FOR OIL-WELLS.

Specilication forming part of Letters Patent No. 208,709, dated October 8. 1R79; application iild September 21, 1878.

To all whom it may concern.-

Be it known that I, FREDERICK BowEN, of

' Barnharts Mills, in the county of Butler and State of Pennsylvania, have invented a new and Improved Pump for Oil-Wells, of which the following is a specification:

The object of :my invention is to provide for withdrawing and replacing the packing of the pump-plunger in oil or Artesian wells without disturbing the tubing or valves.

My invention consists in the arrangement ofthe upper valves in connection with the cell containing the stuffing-box, and to the manner of securing and removing the packing-ring of Babbitt metal, and also consists in certain details of construction hereinafter described.

In the accompanying drawing, Figure 1 is a longitudinal section of a cell or chamber containing the upper valves and stuffing-box in connection with the plunger of a pump. Fig. 2 is a cross-section at the line a: zr, and Fig.- 3 shows the plunger in position for disconnecting the packing.

Similar letters of reference indicate correspondin g parts.

a is the plunger or pump rod. b is 'a cell or chamber, through which the rod a passes. The chamber b is one section of the well-tubing, the other sections being connected,as seen by dotted lines at c and d, and the section d con nects with pump-barrels of usual character. Therod a is shown with screw-threads at both ends for fthe connection of other lengths of rod.

The chamber b is divided by a horizontal partition, e, into two parts, that have communication with each other by the circular openin gs j' in partition c. The walls of chamber b are shown as in two parts, united by a screwthread on the line of the partition c, so as to give access to interior.

The partition c is formed in one piece with or supports the central stufin g-box g, that is around the plunger a. The inner surface of the stuffing-box g is conical in form, the base of the cone being upward, and It is a conical ring or' tube of Babbitt metal iitting within the stuffing-box g around the rod a. The

packing-ring h is pressed tightly to place, and retained by a screw-collar, i, fitting around the plunger a, and screwing in at the upper end of the stufiing-box g. The outer end of collar i is provided with mortises L L', by which the collar i may be scewed in and out, as next described.

Upon the rod a, above the stuffing-box g, are two lugs or projections, m m, at opposite sides, and of such size that they will tit into the mortises k k of collar i, as seen in Fig. 3. These lugs may be the projecting ends of a cross-pin secured in a slot in rod a., or they may be formed with the collar n, that is secured on rod a.

By lowering the rod a, the lugs m are engaged with the mortises 7s, and then the collar t' can be unscrewed by turning rod a, and when the collar 't' is free it and the packing-ring It may be drawn up with rod a. A new packing can thus be placed from the top of the well and the collar fi screwed to place again.

The openings j' in partition c arefurnished with the ball-valves o, which are retained in place bythe cages p p. The cages p are foimed with and are held in place by a ring, q, around the stufling-box g. The valves o are thus in the same chamber that contains the stuft'- ing-box, and there is nothing outside of the chamber to hinder the ready removal of the tubing when that operation is necessary.

Having thus described my invention, I claim as new and desire to secure by Letters IatentF 1. The combination and arrangement of the stuffing-box g, partition e, and valve or valves o within the cell or chamber b, substantially as and for the purposes set forth.

2. The screw-collar i, provided with slots or mortises lr, in combination with the lugs or projections m upon the plunger-rod a, substantially as and for the purposes set forth.

3. The combination of the ring q with the stuffing-box g, partition e, and valves o, substantially as and for the purposes set forth. FREDERICK BOWEN.

Witnesses:

S. I. MCKEE, F. M. SMALL. 

